Table 3. Correlations between clinical parameters and expressions of OPG protein or mRNA in normal group.

parameters	OPG protein		OPG mRNA
	R	P	R	P
SBP pre-delivery	0.046	0.900	−0.004	0.992
DBP pre-delivery	0.310	0.383	0.021	0.953
Serum albumin(g/L)	0.269	0.453	−0.647	0.043
Serum Cr(umol/L)	0.012	0.975	0.403	0.248
Serum BU(mmol/L)	0.339	0.338	0.142	0.696
Fast sugar()	−0.034	0.927	0.554	0.097
Delivery weeks	−0.136	0.475	−0.134	0.713
Birth weight(g)	−0.171	0.367	0.400	0.252
Birth length(cm)	−0.190	0.315	0.314	0.377